已知兩向量 與 的內積為10。若 = ( x , 1 ), = ( 2 , y ),則x與y滿足下列何種關係式?

數學與邏輯測驗

Quiz
•
Mathematics
•
12th Grade
•
Hard
倖綺tkvs 許
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29 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
2x + y =10
x + 2y =10
x y + 2 =10
x y - 2 =10
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
「我們與惡的距離」是一部公視推出的社會寫實電視劇。假設放在數線上來看,「我們」的坐標為x,「惡」的坐標為2,「善」的坐標為3;請以數學上的絕對值來表示以下這句話:「我們與惡的距離小於善與惡的距離」。
| x - 2 | < | 3 - 2 |
| x - 2 | < | x - 3 |
| 3 - 2 | < | x - 2 |
| x - 3 | < | x - 2 |
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
當角度θ由50°增加到100°,關於sin ( 2θ - 360° ) 之值的正負變化,下列敘述何者正確?
從正遞減到負
從負遞增到正
遞減但全為正
遞增但全為負
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
在坐標平面上,已知直線L1:x + y + 115 = 0,直線L2與直線L1互相平行且與直線L3互相垂直。若直線L3過點 ( 113 , 114 ),則直線L3的x截距為何?
- 113
- 1
1
113
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
已知一個多項式除以 ( x - 1 ) 餘2,且除以 ( x - 2 ) 餘1,試問該多項式有可能是下列何者?
2024 ( x - 1 )( x - 2 ) - 2 ( x - 2 ) + 1
2024 ( x - 1 )( x - 2 ) - 3 ( x - 1 ) + 2
2024 ( x - 1 )( x - 2 ) + ( x - 1 ) + 2
2024 ( x - 1 )( x - 2 ) - ( x - 2 ) + 1
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
阿強在一圓形噴水池邊上任意找三個點A、B、C,經測量發現B、C兩點間的直線距離為5公尺,且與的夾角為30°,試問噴水池的面積為多少平方公尺?
9 π
16 π
25 π
36 π
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
小倩在一家營運穩定的公司上班。若小倩的起薪為每個月4萬元,且每年會調薪2 %,即一年後為40000 × 1.02元,兩年後為40000 × ( 1.02 ) 2元,以此類推。試問幾年後小倩的月薪最接近8萬元?
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